सदिश , vecP,vecQ तथा vecR के परिमाण क्र...

सदिश , `vecP,vecQ` तथा `vecR` के परिमाण क्रमशः 5, 12 और 13 इकाई है। यदि `vecP + vecQ =vecR` हो, तो `vecQ` व `vecR` के मध्य कोण होगा:

A

`cos^(-1)(5/12)`

B

`cos^(-1)(5/13)`

C

`cos^(-1)(12/13)`

D

`cos^(-2)(12/13)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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